Turn text matching a certain regex into a link

Description

In some cases, the actual text to be linked is distinctive enough to be turned into a link without many false positives. For example, TOPdesk service management software uses identifiers like '0811 123' for incidents. When text of this form occurs, it could be automatically rendered into a link to the relevant TOPdesk page.

This Trac plugin allows these kinds of links to be made with a minimum of configuration, based on a regex that matches the external identifiers.